when i compare your tests i see there must be something wrong.The Nikon 70-200 F4 ED VR get in this test 17 point overall score and in annother test that same lens get 28 point. Is there something i am missing here ?

oh i see, it is really a combination of lens and camera you are testing. So using a better camera will give a better score. When not using a D7100 to test the sigma 50-150 F2.8 you really give it a lower score than it deserve. Shame on you (